A theatre contains three spotlights - left, right and front of stage. Each spotlight is controlled by it's own on-off switch. The three switches are in a back tech room with no line of sight to the theatre. They are identified as A, B and C. There are no mirrors, reflections or shadows and you are alone.
How do you match each switch to it's spotlight - if you can only enter the tech room once?
go into tech room and put switch A on
5 mins later turn switch B on and turn A off
go to the spotlights- the light that is on is for B,the light that is off and feels warm is for A , other light that is off is for C
As stage right is stage right as you are looking at the audience from the stage, I would guess they are in the order an actor would be seeing them - ACB.